those are treated as two code points.  For simplicity, this document
will use the unqualified term <i>character</i> to refer to a Unicode code point
in the source text.
</p>
<p>
Each code point is distinct; for instance, uppercase and lowercase letters
are different characters.
</p>
<p>
Implementation restriction: For compatibility with other tools, a
compiler may disallow the NUL character (U+0000) in the source text.
</p>
<p>

s[n].until){case"undefined":s[n].until=1/0;break;case"string":t=M(s[n].until).startOf("day").valueOf(),s[n].until=t.valueOf();break}}return s},pt.erasParse=function(e,a,t){var s,n,r,d,i,_=this.eras();for(e=e.toUpperCase(),s=0,n=_.length;s<n;++s)if(r=_[s].name.toUpperCase(),d=_[s].abbr.toUpperCase(),i=_[s].narrow.toUpperCase(),t)switch(a){case"N":case"NN":case"NNN":if(d===e)return _[s];break;case"NNNN":if(r===e)return _[s];break;case"NNNNN":if(i===e)return _[s];break}else if(0<=[r,d,i].indexOf(e))return _[s]},pt....